def rowStr1 : Array Bool → String := Array.foldr (fun b s => s ++ (if b then "#" else " ")) ""
def rowStr2 : List Bool → String := List.foldr (fun b s => s ++ (if b then "#" else " ")) ""
def rowStr3 (as : Array Bool) : String := as.foldr (fun b s => s ++ (if b then "#" else " ")) ""
def rowStr4 (as : List Bool) : String := as.foldr (fun b s => s ++ (if b = true then "#" else " ")) ""
def rowStr5 : Array Bool → String := fun as => Array.foldr (fun b s => s ++ (if b then "#" else " ")) "" as
def rowStr6 : List Bool → String := fun as => List.foldr (fun b s => s ++ (if b then "#" else " ")) "" as

macro "if' " c:term " then " t:term " else " e:term : term =>
  `(let_mvar% ?m := $c; wait_if_type_mvar% ?m; ite ?m $t $e)

def rowStr7  : Array Bool → String := Array.foldr (fun b s => s ++ (if' b then "#" else " ")) ""
def rowStr8  : List Bool → String := List.foldr (fun b s => s ++ (if' b then "#" else " ")) ""
def rowStr9  (as : Array Bool) : String := as.foldr (fun b s => s ++ (if' b then "#" else " ")) ""
def rowStr10 (as : List Bool) : String := as.foldr (fun b s => s ++ (if' b = true then "#" else " ")) ""
def rowStr11 : Array Bool → String := fun as => Array.foldr (fun b s => s ++ (if' b then "#" else " ")) "" as
def rowStr12 : List Bool → String := fun as => List.foldr (fun b s => s ++ (if' b then "#" else " ")) "" as

def quoteString (s : String) : String :=
  let q := "\"";
  let q := s.foldl
    (fun q c => q ++
      if' c == '\n' then "\\n"
      else if' c == '\n' then "\\t"
      else if' c == '\\' then "\\\\"
      else if' c == '\"' then "\\\""
      else String.singleton c)
    q;
  q ++ "\""